15432642903 has 4 divisors (see below), whose sum is σ = 20576857208. Its totient is φ = 10288428600.

The previous prime is 15432642899. The next prime is 15432642917. The reversal of 15432642903 is 30924623451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30924623451 = 3 ⋅10308207817.

It is not a de Polignac number, because 15432642903 - 2² = 15432642899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15432642923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572107148 + ... + 2572107153.

It is an arithmetic number, because the mean of its divisors is an integer number (5144214302).

Almost surely, 2^15432642903 is an apocalyptic number.

15432642903 is a deficient number, since it is larger than the sum of its proper divisors (5144214305).

15432642903 is an equidigital number, since it uses as much as digits as its factorization.

15432642903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144214304.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 15432642903 in words is "fifteen billion, four hundred thirty-two million, six hundred forty-two thousand, nine hundred three".